Improvement in hydrants



UNITED STATES BIRDSILL HOLLY, OFV LOCKPORT, NEW YORK.

IMPROVEMENT IN HVDRANTS.

Specification forming part of Letters Patent No. 94,749, dated September14, 1869.

CASE D.

To all whom it may concern Be it known that I, BIRDsILL HOLLY, ofLockport, in the county of Niagara and State of New York, have inventeda new and Improved Hydrant; and I do hereby declarethat the following isa full, clear, and exact description thereof, reference being had to theaccompanying drawings, making part of this specification, in which-Figure lis a diametrical section through the improved hydrant, showingits main valve shut. Fig. 2 is a sectional view of the lower parts ofthe hydrant, showing the main valve open.

Similar letters of reference indicate corresponding parts in the twofigures.

This invention relates to certain novel improvements on hydrants whereinthe water is conducted from a foot or chamber at the base of thehydrant-stock through a pipe which is inclosed centrally within a case,and thence into a cap or upper chamber, from'which the water is drawn,and wherein a valve which is operated by a key-rod is arranged at thebase of the said central pipe, for shutting communi cation between thispipe and the foot or base chamber.

The nature of my invention consists, first, in the employment of aleather valveseat, and in so arranging such a valve that it may be heldin place by the' main valve, while lowering or adjusting'the internalpipe to its place upon the foot-chamber of the hydrant, also in adaptingsuch valve to serve as a packing beneath the lower end ofthe internalpipe, as will be hereinafter explained 5 secondly, in arranging abovethe main va1ve,

drant on the top of the casing inelosing the internal pipe, as will behereinafter explained.

To enable others skilled in the art to understand my invention, I willdescribe its construction and operation.

In the accompanying drawings, A represents the external casing of thelower portion of the hydrant, which casing is anged at its extremities,and secured by bolts to a hollow foot, D, at one end, and to the uppersection B at the other end. The foot D is constructed with a sleeve forhaving a pipe cou-V nected to it, and itis also constructed with avalve-post stop, d, andV an annular shoulder, n, upon which. latter thelvalve-box G on pipe Ey is supported and irmly held. The stop d, whichrises from the bottom of the foot D, is intended for preventing the mainvalve g from being depressed too far from its seat.

The internal pipe E is constructed with annular shoulders or flanges, ss, near its ends, between one of which and the end of the pipe ascrew-thread is cut, by means of which the valve-box Gr is securedtightly to this pipe. The opposite or upper end of the pipe E is fittedinto the body portion B, and the shoulder s caused to bear against thebottom of portion B, as shown in Fig. 1. V

The valve-box has a bridge extending diametrically across it inside,through which a screw-threaded stem, g1, of valveg is tapped,

upon the upper prismatic end g2 of which stem Y the key-rod Fis fitted,as shown.

There are also made through the bridge in the box G holes for receivinga trip-valve, b, and stem t', which latter passes freely through thebridge, and extends below it far enough to be struck by valve g andlifted thereby when it is raised to its seat, as shown in Fig. 1. Thecone-valve b, formed on the upper end of the 'stem i, lits into a seatwhich is formed at the upper termination of a right-angular passage, c,through which water will escape from pipe E into the space between thepipe and casing A when valve b is raised from its seat. The water whichows through the passage c when valve g is shut escapes from the hydrantthrough the orifices p, made through the casing A near its lower end.

packing between this end and the shoulder n on the top of the foot D,asshown'in Figs. l and 2. rEhe ring also serves as the seat for valve g,by its being arranged between the beveled perimeter .of this valve andthecorrespondingly beveled edge surrounding the valveopening. By thismode of applying theleather Y ring t it will be seen that when valve gisshut it will hold the ring in place, and allow it to be adjusted inplace on the shoulder 'n in putting together the hydrant.

The body B is seated upon the liange s, surrounding the pipe E near itsupper end, and also upon the upper end of the external pipe orcasing A;consequently the internal pipe E will be held down rmly upon thepackingring t and leakage prevented at this point.

The body B has a discharge-nozzle, B', and also a flat tcp, r, throughwhich latter a hole is made centrally for allowing the upper prismaticend of key-rod F to protrude through this top. The collar 7c preventsthe Withdrawal of the key-rod from its place in the hydrant.

C is a cap, which is supported on the top plate r by a number of tubularposts, c, arranged very near together around the rod F, and which isconfined down in place by bolts passed through the posts, and providedwith nuts on their lower ends. The hole l, which is made centrallythrough the cap C, allows a key to be passed through it and applied tothe upper end of the key-rod F. The'posts c and cap C prevent the use ofa spanner or wrench to turn rod F, and allow this rod to be turned onlyby an instrument made for the purpose.

Having described my invention, WhatIclaim as new, and desire to secureby Letters Pat- 1. The lining t to the seat of the main valve, adaptedto serve the double purpose of a seat, and alsov a packing at the jointbetween the pipe E and the foot D, in combination with the externalcasing A, substantially as described.

2. The arrangement of the leather ring t between the valve g and thelower end of the valve-box G, in combination with the pipe E andexternal casing A, substantially as described. g

3. The combination of the parts A B D E, substantially as set forth.

4. rEhe cap C, applied on top of the hydrant and supported upon posts c,in combination with key-rod F and central orifice l, substantially asand for the purpose described.

BIRDSILL HOLLY.

Witnesses:

C. G. HILDRETH,

R. T. CAMPBELL.

